Volume 34 - Article 22 | Pages 615–656  

Differences in all-cause mortality: A comparison between immigrants and the host population in Norway 1990-2012

By Astri Syse, Bjorn H. Strand, Oyvind Naess, Ólöf Anna Steingrímsdóttir, Bernadette N. Kumar

Abstract

Background: Differences in all-cause mortality between immigrants and host populations may provide insight into health inequities that could be reduced.

Objective: Death risks of adult immigrants were compared to those of the host population to assess effects of country of origin, duration of residence, calendar period, and sociodemographic characteristics, i.e., sex, education, and marital and parental status.

Methods: Registry data encompassing the entire Norwegian population age 25-79 in 1990-2012 were used to compare death risks in various immigrant groups and the host population, using discrete-time hazard regression models with time-varying covariates.

Results: Over 451,000 deaths occurred in around 4.4 million individuals. After adjusting for sex, age, and calendar period, immigrants had an 8% survival advantage (odds ratio (OR) 0.92). Death-risk estimates for immigrants were lowered pronouncedly by further adjustment of sociodemographic factors (OR 0.81). The greatest survival advantage was observed among immigrants with a short duration of residence. With increasing lengths of stay, immigrants’ risk of death became similar to that of the host population. The survival advantage was most pronounced for younger, unmarried, and childless immigrants. Although the survival of Central and Eastern European immigrants improved over time, none of the groups had a higher adjusted death risk than the host population.

Conclusions: Immigrants have a 20% survival advantage compared to the host population. The convergence in mortality with increasing duration of residence suggests that ‘healthy migrant’ and ‘acculturation’ effects counteract each other, and warrants further research on the health and welfare of long-term immigrants.

Author's Affiliation

• Astri Syse - Folkehelseinstituttet (Norwegian Institute of Public Health), Norway EMAIL
• Bjorn H. Strand - Folkehelseinstituttet (Norwegian Institute of Public Health), Norway EMAIL
• Oyvind Naess - Folkehelseinstituttet (Norwegian Institute of Public Health), Norway EMAIL
• Ólöf Anna Steingrímsdóttir - Folkehelseinstituttet (Norwegian Institute of Public Health), Norway EMAIL
• Bernadette N. Kumar - Nasjonal Kompetanseenhet for Migrasjons- og Minoritetshelse (NAKMI), Norway EMAIL

Other articles by the same author/authors in Demographic Research

Does cancer affect the divorce rate?
Volume 16 - Article 15

Most recent similar articles in Demographic Research

Frailty at death: An examination of multiple causes of death in four low mortality countries in 2017
Volume 49 - Article 2    | Keywords: aging, causes of mortality, mortality, multiple causes of death

Ethnic and regional inequalities in Russian military fatalities in Ukraine: Preliminary findings from crowdsourced data
Volume 48 - Article 31    | Keywords: armed conflict, fatality, military, mortality, Russia, Ukraine, war

Educational reproduction in Sweden: A replication of Skopek and Leopold 2020 using Swedish data
Volume 48 - Article 25    | Keywords: differential fertility, education, prospective models, reproduction, social mobility, Sweden

Migration’s contribution to the urban transition: Direct census estimates from Africa and Asia
Volume 48 - Article 24    | Keywords: migration, population growth, urbanization

A register-based account of period trends in union prevalence, entries, and exits by educational level for men and women in Finland
Volume 48 - Article 14    | Keywords: cohabitation, divorce, education, Finland, marriage, register data, trends, union dissolution